Clonazepam is a benzodiazepine derivative with highly potent anticonvulsant, muscle relaxant, and anxiolytic properties. It is marketed by Roche under the trade-names Klonopin in the United States, and Ravotril in Chile. Other names like Rivotril or Rivatril are known throughout the large majority of the rest of the world. Clonazepam is a chlorinated derivative of nitrazepam and therefore a nitrobenzodiazepine.